ENTOMOLOGY. 



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Genus CCCLXXXIX. Naucoris. Geoffroy, Fabri-- 

 cius, Olivier, Latreille. 



Nepa. Linnaeus, De Geer. 



Four posterior feet ciliated, formed for swimming. 

 Antennae inserted beneath the eyes. Body ovate, much 

 depressed. 



Obs. This genus, in habit, makes a near approach to 

 the family Beloatomida, and should perhaps be placed in 

 that division. 



Family II. Nefiida. 



Anus furnished with two setae. Tarsi of the four 

 posterior feet one jointed. Antennae three jointed. 



Genus CCCXC. Nepa. Linn. De Geer, Fabr. Oliv. 

 Lam. Latr. 



Hepa. Geoffroy. 



Rostrum perpendicularly inflected. Body oval. An- 

 terior thighs thick. Four hinder feet not elongate-fili- 

 form. 



Sfi. 1. Cinerea. Dark-greyish-black. 



Nefia Cinerea. Linn. Fabr. Latr. 



Punaise d'eau scorfiion aquatique. De Geer. 



Le Scorfiion aquatique a corfls ovale. Geoffroy. 



Inhabits the ditches of Europe. 



Genus CCCXCI. Ranatha. Fabr. Schellenberg, 

 Latr. 



Nepa. Linn. De Geer, Oliv. Lam. 



Hepa. Geoffroy. 



Rostrum porrected. Body linear. Four hinder feet 

 very long, filiform. Thighs of anterior feet elongate. 



Sfi. 1. Linearis. Greyish-brown. 



Ranatra linearis. Fabr. Latr. Schcll. 



JVe/ia linearis. Linn. 



Punaise d'eau scorfiion allonge'. De Geer. 



JLe Scorfiion aquatique a corfis allonge. Geoff. 



Inhabits the ditches and ponds of Europe. It is very 

 local in this country. It may occasionally be found near 

 London in Copenhagen Fields, and in ponds near Ham- 

 mersmith. It has likewise been taken near Halesworth 

 in Suffolk. 



Tribe VI. Notonectides. 



Tarsi of anterior feet not united with the tibiae. Body 

 depressed cylindric, or cylindric-oval. 



Family I. JVotonectida. 



Tarsi all with two joints. 

 ^ Genus CCCXCII. Notonecta. Linn. Geoff. Fabr. 

 Oliv. Latr. 



Nepa. De Geer. 



Scutellum triangular, large. Four anterior feet with 

 strong nails ; the hinder pair elongate, ciliated, with ve- 

 ry minute nails. 



Sfi. 1. Glauca. 



Notonecta glauca. Linn. Fabr. Latr. 



Inhabits fresh waters of Europe. 



Family II. Corixida. 



Tarsi of the four anterior feet one-jointed, of the hin- 

 der pair two-jointed. 



Genus CCCXCIII. Corixa. Geoff. Oliv. Lam. Latr. 



Notonecta. Linn. 



Nepa. De Geer. 



Sigaka. Fabr. Schrank, Schellenberg. 



Anterior pair of feet without nails ; the other feet 

 long, furnished with nails. Scutellum none. 



Sfi. 1 . Striata. 

 Vol. VIII. Part. II. 



Notonecta striata. Linn, 



Sigara striata. Fabr. 



Corixa striata. Latr. 



This species seems to be subject to very great variety 

 in colour and size. It occurs in almost every pond and 

 rivulet, especially where the botom is slimy. 



Order IX. OMOPTERA. 



Order Hemiptera. Linn. Cuvier, Lamarck. 

 Class Ryngota. Fabricius. 

 Order Hemiptera, Section 2, Homofitera. Latr. 

 Order Omoptera. Leach. 



Characters of the Order. 



Rostrum attached to the inferior part of the head. Ely- 

 tra coriaceous or membranaceous throughout, suture 

 straight. Thorax composed of two segments, the second 

 as long or longer than the first. Ocelli three. 



Observe. Metamorphosis semicomplete, or incomplete. 



Tribe I. Tettigonides. 



Antennae composed of six distinct joints. Ocelli or lit- 

 tle eyes three. Tarsi with three joints. 



Genus CCCXCIV. Tett-igonia. Fabr. 



Cicada. Lamarck, Geoff Linn. De Geer, Latr. 



Thighs of the anterior feet thick, dentate. 



Sfi. 1. Hxmatodes. Body slightly silky tomentose, 

 black; anterior segment and margins of the thorax, 

 sides of the abdomen and nerveurs of the elytra, ferru- 

 ginous-red. 



Cicada hamatodes. Linn. Latr. 



Tettigonia sanguinca. Fabr. 



Inhabits southern Europe. 



Tribe II. Cicadibes. 



Antennae three-jointed. Ocelli two. Tarsi with three 

 joints. 



Family I. Fulgerida. 



Antennae not inserted in the internal sinus of the 

 eyes ; the two first joints conjoined shorter than the 

 head. 



Genus CCCXCV. Fulgora. Linn. Fabr. Latr. 

 Oliv. Cuv. 



Front produced into a rostrum. Eyes globular. 



Sfi. 1. Lanternaria. Rostrum very large oval. Elytra 

 and wings variegated, with true wings ocellated. 



Fulgora lanternaria. Linn. Fabr. Latr. 



Inhabits Surinam. The rostrum of this, (as of all 

 other species of the Genus) emits a phosphorescent 

 light in the dark. The light of this species is so very 

 vivid, as to enable one to read a newspaper. 



Sfi. 2. Candelaria. Front with a subulate, ascending 

 rostrum. Elytra green, variegated with yellowish. 

 Wings yellow with black tips. 



Fulgora candelaria. Linn. Fiibr. Donov. 



Inhabits China, from whence it is very frequently sent 

 home in collections of insects. 



Genus CCCXCVI. Flata. Fabr. 



Fulgora Latreille. 



Front as if truncated, vertical, not rostrated. Eyes 

 globulare. Elytra very broad, the external margin very 

 much dilated. Body broad triangular. 



Sfi. I. Reticulata. 



Flata reticulata. Latr. 



Inhabits Europe. 



Gbnus CCCXCVII. Issus. Fabr. 

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